Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
nang van » dang van, tang van, lang van
va thanh » gia thanh, ban thanh, va tinh
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
van hoi » van hoa, van hoc, van hoe
va hanh » van hanh, va danh, ban hanh
va nam » van nam, ha nam, va nay
y nang » ky nang, ly nang, v nang
vi su » va su, ki su, oi su
ve su » va su

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang van hoi. hieu va nam thuc ((va hanh) or (va thanh)) ((vi su) OR (ve su)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang van hoi. hieu va nam thuc ((va hanh) OR (va thanh)) ((vi su) OR (ve su)) triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach y nang van hoi. hieu va nam thuc ((va hanh) or (va thanh)) ((vi su) OR (ve su)) triet*".